摘要
以吉林兰旗松花江大桥为例,建立了半飘浮体系斜拉桥的有限元模型,研究了半飘浮体系斜拉桥的动力特性、地震反应。针对斜拉桥的内力和位移往往是相互矛盾的这一特点,采用反应谱和时程分析法进一步研究了桥塔和主梁间的纵向弹性约束对动力特性、地震反应的影响,得出了本桥弹性约束刚度的取值范围和原则,并对抗震设计提出建议。
Based on LanQi SongHua River Bridge, the dynamic character and seismic response of the half floating structural system were investigated by using space finite element model. In the light of the eontrodiefion between the inner force and deformation of cablestayed bridge , the paper analyzed the influence of longitudinal elastic restriction on dynamic character and seismic response by response spectrum and time history method. Some advice about aseismatie design of this bridge, the principle and range of the elastic constraint stiffness value were brought forward.
出处
《公路交通科技》
CAS
CSCD
北大核心
2006年第3期93-96,103,共5页
Journal of Highway and Transportation Research and Development
关键词
斜拉桥
动力特性
地震反应
弹性约束刚度
Cable-stayed bridge
Dynamic character
Seismic response
Elastic restriction stiffness
